Memory leak in getting images from gallery to my application - ios

Question

I have this function. This function initializes all the media files for gallery view.
func initMediaFiles() {
var assets: [PHAsset] = []
let options = PHFetchOptions()
options.sortDescriptors = [NSSortDescriptor(key: "creationDate", ascending: false)]
options.fetchLimit = 1000
let results = PHAsset.fetchAssets(with: .image, options: options)
results.enumerateObjects({ (object, _, _) in
if let asset = object as? PHAsset {
assets.append(asset)
}
})
SCPAsset.imageManager.startCachingImages(for: assets, targetSize: CGSize(width: 110.0, height: 147.0),contentMode: .aspectFill, options: nil)
for asset in assets {
let scpAsset = SCPAsset(initWithPHAsset: asset)
scpAsset.inspectionUUID = self.inspectionId!
self.mediaAssets.append(scpAsset)
}
}
I am not able to see why I am getting like 10,000 memory leak every time i load the gallery view.

Answer 1

Here's something I've done in a project that might help:
Some properties:
let requestOptions = PHImageRequestOptions()
let fetchOptions = PHFetchOptions()
let cachingImageManager = PHCachingImageManager()
var assets: [PHAsset] = [] {
willSet {
cachingImageManager.stopCachingImagesForAllAssets()
}
didSet {
cachingImageManager.startCachingImagesForAssets(assets,
targetSize: PHImageManagerMaximumSize,
contentMode: .AspectFit,
options: self.requestOptions
)
}
}
func fetchPhotos() {
requestOptions.resizeMode = PHImageRequestOptionsResizeMode.Exact
requestOptions.version = .Current
requestOptions.deliveryMode = PHImageRequestOptionsDeliveryMode.HighQualityFormat
requestOptions.synchronous = true
fetchOptions.sortDescriptors = [NSSortDescriptor(key:"creationDate", ascending: false)]
if #available(iOS 9.0, *) {
fetchOptions.fetchLimit = 50
} else {
// Fallback on earlier versions
}
fetchResults = PHAsset.fetchAssetsWithMediaType(PHAssetMediaType.Image, options: fetchOptions)
guard let fetchResults = fetchResults else {
print("No PHAssets")
return
}
dispatch_async(dispatch_get_global_queue(QOS_CLASS_USER_INITIATED, 0)) { [weak self] in
fetchResults.enumerateObjectsUsingBlock{ object, index, stop in
let asset = object as! PHAsset
self?.assets.append(asset)
}
dispatch_async(dispatch_get_main_queue()) {
self?.photoCollectionView.reloadData()
}
}
}